Welcome to Cromartie High—a melting pot of underachievers and overzealous bullies, where the fist rules, and the student body has the combined I.Q. of a rusty nail. After a whole lot of bad judgment and a little bad luck, Takashi Kamiyama is now attending this academy of dunces. Here, his only homework will be defending himself against the foul-mouthed robots, semi-intelligent apes, and masked villains that roam the halls of Cromartie High School!

Won the 26th Kodansha Manga Award for Best Shounen in 2002 (shared with Beck).

Note: The chapters are incorrectly numbered starting from Volume 14 (the volume begins with chapter 267 even though the last chapter of Volume 13 is 269).

From Shinmakoku Scanlations:

1-2) 24 Jikan Eikyou-chuu
Nakamichi works in the 24-hour convenience store on Sano's way home from school. Nakamichi is baffled by the amount of lollipops Sano buys everyday! But he gets very used to seeing Sano around, that when suddenly Sano stops showing his face at the store, he misses him! What happened to Sano? And why buy so many lollipops?

3-5) 24 Jikan Renai-chuu
Yoshino, an ordinary guy works at a convenience store where he meets the beautiful Yagami-san. He overhears Yagami-san having an argument over the phone with who he assumes is his girlfriend. What will Yoshino do when he sees Yagami drunk and collapsed outside the convenience store, and hears him whisper a guy's name in his sleep?

6-8) Extra: 24 Jikan Eikyou-chuu

A oneshot about two Brothers. The older one comes to live with his younger brother because his Workplace went bankrupt and he has no place to stay. What happens when the younger brother always felt more than brotherly feelings..

From Nagareboshi Manga:

A collection of oneshots:

PS I Love You
A girl finds a note in a book written by her class' most rebellious boy. Will this note somehow connect them...?

Koibana - Koi
A young hostess finds some joy in her life by helping a boy become more confident in his love life.

17 Sai
The best friend of the girl in the story get along really well. Until one night where something happens between the two of them and everything changed after that.

Happy Honey
A girl finds herself the object of an American boy’s affection. Can she respond without prejudice?

From Manga Art:
2nd year Junior High schooler, Misaki is in love with Mutou-kun in her class. But the one he loves is the class idol, Kuririn. However, Misaki doesn't need to be depressed. She's got other options...!?

* Contains an extra story called Shotto Sunzen!.

Ishiyama High is a school populated entirely by delinquents, where nonstop violence and lawlessness are the norm. However, there is one universally acknowledged rule—don't cross first year student Tatsumi Oga, Ishiyama's most vicious fighter.

One day, Oga is by a riverbed when he encounters a man floating down the river. After being retrieved by Oga, the man splits down the middle to reveal a baby, which crawls onto Oga's back and immediately forms an attachment to him. Though he doesn't know it yet, this baby is named Kaiser de Emperana Beelzebub IV, or "Baby Beel" for short—the son of the Demon Lord!

As if finding the future Lord of the Underworld isn't enough, Oga is also confronted by Hildegard, Beel's demon maid who insists he take responsibility as Beel's guardian. Together they attempt to raise Baby Beel—although surrounded by juvenile delinquents and demonic powers, the two of them may be in for more of a challenge than they can imagine.

From Wataame Shoujo:

The story is about Kobato going to Japan to find her brother but accidentally, she becomes an idol when she meets Takeru. The catch is, Takeru and probably everyone else thought she was actually a he because of how she acts and dresses.

Anna, a reporter on sweets, likes Toranosuke, a patissier. She wants to develop her love to him, but his twin brother Ryunosuke always gets in the way. Soon, however, she gets aware that she likes Ryunosuke as much as Toranosuke.

Chapter 4 features an unrelated side story about a career woman who has been dumped by her boyfriend, but injures her legs, but luckily a certain co-worker that's considered useless comes into her aid. The co-worker had therefore been assigned to take care of her, where romance blooms, but...

*Chapter 1: Immorality Undermines Sweetly
*Chapter 2: The Pleasure of Immoral Secrecy
*Chapter 3: The Bitter Taste of Immoral Bliss
*Chapter 4: Passion and Secrets
*Chapter 5: Sweet Dandy Whispers (unscanlated)
*Chapter 6: Passionate Night (unscanlated)

Morinonaka Iyo is a shut-in (hikikomori) who refuses to go to school, choosing instead to coop herself up at home all day surfing the net and browsing online auctions. However, her homeroom teacher will stop at nothing to make her go to school...

1-4) Akihabara Fall In Love
Hasegawa was always called an Otaku when he was younger because of his glasses. Because of that, he had to hang out with other Otakus even though he didn't consider himself as one of them. He completely changed his image in middle school and finally landed in a large company after graduating from university. However, he has now been appointed to a local area, Akihabara where he once again finds himself shoulder to shoulder with other otakus.

One day, on his way home from work, he decides to help an otaku looking kid from getting robbed. However, he gets hurt and the next thing he knows is waking up in a strange room and encountering the person he helped in a compromising position.

5) Extra: The Coward's "I Love You"
Haru's childhood friend, Genta, is the new transfer student from America. Since their mothers were classmates in college, they spent most of their childhood together and Haru has loved him since then. But when the grown up Genta tells him that he has someone he likes, how will Haru react?

A girls' high school that Mamoru attends has amalgamated a boys' high school, which was her wish for a long time. She expects that she will be able to find a boyfriend soon. However, boy students are around ten percent of girl students, and Mamoru is annoyed because her classmate Azuma makes a pass at her. He is known to be dirty-minded. When she was fighting against him as usual, he kissed her all of a sudden.

Also contains two extra stories:

- Let's Study Together

- Where's the Love, Where Are You

Plain House
Minori wanted to be an interior designer so she applied for a job at “Sunhouse Residence” company. During the welcoming karaoke party she took the initiative and sang a song that the director was good at. As a result she was transferred to the show house, which proved to be also the residence of one interesting guy.

Love Trainer
Asami, who hates dishonesty, often causes troubles in the company where she's working. This time, she gets a client's director angry, and she receives a letter of transfer for the fourth time. She is appointed to a post in the department of technological development where the elite and honest staff are working. Kayato is her boss and hard trainer. She dislikes him, and wants to go back to the post as a receptionist.

Organic Boys
On the 20th birthday of Yuu-chan her best friends confess to her. Who will she choose? And how will she react?

After 5 ni Sakura Saku (Sakura Falling after 5)
Rika had no time and no personal life. She worked everyday at her office until 5 and then she helped her father with his shop. One day an university student comes to eat at the shop and this is only the beginning.

From Fate:

Niina went back to the past and landed in 'Hakkenden's (eight dog warriors) world. There, she met Satomi clan's young master, Satomi Takemasa. According to him, Niina's the reincarnation of one of the Hakkenshi. In order to beat their worst enemy, Tamazusa, they need Niina's power?

Our heroine, Ruu, is having a hard time. Her mother died when she was little, and her father, with whom she had been living, has disappeared without a trace after getting into debt. Ruu is on her own.
To make ends meet, she takes a job as a live-in maid for a very wealthy household. To Ruu's surprise, the house she ends up working at is the home of three cute brothers, and she already knows one of them! They agree to let Ruu work there because they are often alone and they could use the help. Ruu moves in and works hard as a maid, and they all become very close. But things aren't always smooth sailing. Ruu has a lot of pressure on her because of her father's debts, and three very cute guys to deal with!

Loner high school student Moribe Kyouya thought he was lucky to have the beautiful and mysterious new transfer student Baroque talk to him. The next thing he knows, he receives a love letter calling him to the roof, but the confession isn't exactly what he expected...

Kuini and Yilou must travel to Tyzzer, an unknown village, to prevent a nameless threat, or the world will end in 80 days. Along the way, they team up with the apprentice artist Lang, who is also traveling to Tyzzer to find the mythical dragons. The way to Tyzzer is filled with danger, mystery, mischief, and… fatal hilarity.

Will they ever get to their destination?

One day a tanuki named Monoko stumbles across a baby abandoned by its mother. Having no family of her own, she raises the baby to the best of her ability even though they originate from different species. Hardships and enemies face the tanuki but that doesn't stop Monoko protecting the baby at all costs. Many trials await this baby as it grows and communicates with the animal world.

Won the Kodansha Manga Award for Children's Manga in 2013.

Koharu is dating the prince in school, Suwa. But things don't turn out as planned when Koharu tells him to keep their relationship a secret!

Sorako and Sorao met in the school office when they both had transferred to a new school. They became friends really fast, but a short bubbly girl comes and claims she likes Sorao. What will Sorako do? A really nice love story.

Nako is a poverty-stricken 21 year-old in desperate need of a job. She applies for a job at a jewelry store. When shop owner Ren identifies herself as a lesbian, the competition for the position evaporates, leaving only Nako. Ren asks her if her sexual orientation will be a problem, Nako sensibly replies that she's not interested, so she doesn't see any problem.